The NationalClimate change is killing off bumblebees: studyJul 9, 2015 | 2:32A Canadian-led study, published in the journal Science, says bumblebees have been slowly disappearing from North America and Europe. because of climate change.

The NationalDNA edits of embryosMar 26, 2015 | 2:35Prominent scientists warn it's time for a moratorium on powerful new genetic engineering tools that can add and remove genes from sperm, eggs or human embryos

The NationalVirgin Galactic spaceship crashesOct 31, 2014 | 2:28A Virgin Galactic spaceship crashed during a test flight in California. One of the two pilots on board was killed, the other seriously injured.